The　precipitation-hardening　Sm-Co　magnets　not　only　have　irreplaceable　applications　under　extreme　conditions　such　as　high　temperatures,　but　are　also　the　most　typical　magnets　with　pinning-controlled　magnetization　reversal　mechanism.　However,　there　have　always　been　two　views　on　this　type　of　pinning,　attractive　or　repulsive.　In　this　article,　the　modification　of　the　parallel　interface　to　the　titled　interface,　led　to　occurrence　of　quasi-repulsive　and　quasi-attractive　pinning　modes,　by　employing　micromagnetic　simulation　methods.　The　corresponding　domain　wall　energy　relationship　between　the　pinning　phase　and　main　phase　was　analyzed　for　different　pinning　modes,　according　to　the　morphology　of　domain　wall　from　the　simulation　results.　The　analysis　results　indicated　that　relatively　small　difference　in　domain　wall　energy　between　the　two　phases　led　to　quasi-repetitive　and　quasi-attractive　pinning　modes.　Our　findings　can　provide　a　reference　for　further　understanding　of　the　magnetization　reversal　mechanism　of　precipitation-hardening　Sm-Co　magnets.　The　emphasis　on　the　influence　of　1:5/2:17　interface　orientation　on　pinning　also　provided　a　perspective　on　the　magnetization　reversal　mechanism　of　other　nanostructured　permanent　magnet　materials.　©　2024　Author(s).